plot_single_asip: Plot Sample Size Against Termination Ratio

In rSSP: Single Acceptance Sampling Plans for Time-Truncated Life Test

Plot Sample Size Against Termination Ratio

Description

Calculates the minimum sample size for different termination ratios and plots the resulting sample size against the termination ratio.

Usage

plot_single_asip(p, a, b = 1, be = 0.25, c = 0, ylim = c(0, 50))

Arguments

p	User-defined probability of failure corresponding to each termination ratio.
a	Numeric vector of termination ratios.
b	Quality ratio. It may be a single value or a vector having the same length as a.
be	Producer's risk.
c	Acceptance number.
ylim	Numeric vector of length two specifying the limits of the y-axis. Default is c(0, 50).

Details

The user supplies the corresponding values of p calculated from their own lifetime distribution.

Value

A data frame containing a, b, p and the required sample size n.

Examples

# Example 1: User-defined failure probabilities
p <- c(0.05, 0.10, 0.15, 0.20)

plot_single_asip(
  p = p,
  a = c(0.5, 1, 1.5, 2),
  b = 1,
  be = 0.25,
  c = 0,
  ylim=c(0,50)
)

# Example 2: Failure probabilities obtained from
# a Burr Type X lifetime distribution

al <- 0.5
b <- 1
a <- c(0.4, 0.6, 0.8, 1, 1.5, 2, 2.5, 3)

h <- sqrt(
  -log(
    1 - (1/2)^(1/al)
  )
)

p <- (1 - exp(-(a * h / b)^2))^al

plot_single_asip(
  p = p,
  a = a,
  b = b,
  be = 0.25,
  c = 6,
  ylim = c(0, 50)
)

rSSP documentation built on Sept. 15, 2026, 1:09 a.m.